Aluminum Alloys For Machining Strong, Lightweight Parts For Gunsmithing
6061-T6 - Heat-treated, aluminum alloy that offers a wide range of
both mechanical properties and corrosion resistance. Easily
machined; has a maximum tensile strength of 35,000 psi.
Big Book Catalog, Issue:65, Page:395
SPECS:18" (45.7cm) long.